Introduction to the Pultrusion Process of Carbon Fiber Wind Turbine Beams
Carbon Fiber Wind Power Pultruded Beam
Pultrusion Molding Production Process Introduction
At a critical historical juncture where we need to develop the economy and achieve dual carbon goals, how to use new clean energy to replace traditional oil and coal resources has become a hot issue of social concern, and wind power, as a type of clean energy, has received more and more attention
Carbon Fiber Wind Power Pultruded Beam
Pultrusion Molding Production Process Introduction
At a critical historical juncture where we need to develop the economy and achieve dual carbon goals, how to use new clean energy to replace traditional oil and coal resources has become a hot issue of social concern, and wind power, as a type of clean energy, has received more and more attention
Wind power generation technology has been invented for nearly a hundred years. The corresponding technology has been relatively mature, but it also faces considerable challenges. The main components of wind power generation equipment, blades, are currently mostly made of glass fiber reinforced composite materials (GFRP), which have good strength and rigidity and low production costs. With the gradual increase in the requirements for the power generation capacity of generator sets, the corresponding blade size also needs to be gradually increased, and higher technical requirements for material strength and stiffness and other performance requirements have also been put forward. Due to the limitations of the performance of glass fiber itself, it is difficult to do this. Therefore, the use of carbon fiber for large blade manufacturing has become the only choice.
Research data shows that only replacing glass fiber composite materials with carbon fiber composite materials at the beam can reduce the weight of the blade by 12%, and have higher rigidity and fatigue resistance, while bringing lower transportation and installation costs and maintenance costs, extending the service life of the wind turbine, and its full life cycle cost is lower.
There are many molding methods for carbon fiber composite materials, and there are also many options for the production and manufacturing of composite material sheets, such as prepreg process, carbon cloth infusion process and pultrusion process. Among them, pultrusion molding process is a molding method for continuous production of fixed-section fiber reinforced composite materials. This technology began in the United States in 1948 and has been developed and promoted throughout the world.
Pultruded profiles are widely used in electrical equipment, corrosion-resistant components, construction engineering, transportation industry, military and other fields, and are currently in a stage of rapid development. Pultrusion can theoretically produce products of any length. The typical pultrusion line speed is 0.2~1.5m/min, and the rapid molding rate can reach more than 4m/min.
It can also produce multiple products at the same time, which greatly improves the molding efficiency and is suitable for mass production. In addition, the production process can be fully automated, and the cross-sectional shape of the products can be serialized and standardized, which significantly reduces the discreteness of the quality of composite products and has stable performance.
The fiber content is high, up to 80%. Since the fibers are fully straightened under tension during molding, the fiber performance can be fully exerted, the longitudinal mechanical properties are outstanding, and the raw material utilization rate can reach more than 95%
